how many solutions are there to the equation below

A guess would be only one as it is an equation of x¹

^{Try it out:}

^{8x+47 = 8x + 40}

^{47=40                                    This is NOT true...so there are actually   ZERO solutions !}    

how many solutions are in this equation.

6x+30+4x=10(x+3)

A. 1

B. Infinitely many

C. 0